Figure 1

Conceptual illustration of the programmable polarization-multiplexed information metasurface. (a) The target image, the cameraman, is encrypted using the algorithm of Double random phase encryption (DRPE) and the binary bits are recalled through a field programmable gate array (FPGA) for the sequential configuration of the proposed metasurface. (b) The metasurface, which employs voltage-controlled polarization modulation, conveys information via distinct polarization channels. The information received is then decryption on the receiving end.